Improvement in car-ventilators



E. KORTING.

Car-Ventilator.

N0.l59,l87 Patentedlan.26,1875.

Inc, I

UNITED STATES PATENT QFFIGE.

ERNST KtjRTING, OF HANOVER, GERMANY.

IMPROVEMENT lN CAR'VENTILATORS.

Specification forming part of Letters Patent No. 159,187, dated January 26, 1875; application filed December 3, 1874.

The drawing represents a central longitudinal section of my device.

A represents a vertical suction-pipe, entering the top of the car, and provided at its upper end with an enlarged head or chamber, a, in the front side of which there is mounted a flaring or funnel-shaped nozzle, B, the small I end of which enters the chamber, as shown.

To the rear side of the chamber a there is secured a flaring or tapering nozzle, 0, with its large end forward, and to the small rear end of this nozzle 0 there is secured the small end of a long flaring or diverging tube, D. The three nozzles, B, O, and D, are arranged in line with each other, and are secured firmly together, so that they cannot change their relative positions.

The whole device is mounted on a vertical pivot or pintle, b, so that it can rotate freely; and the rear diverging tube is provided with a blade or vane, t, which, being acted upon by the wind, keeps the ventilator with the mouth of the nozzle B toward the front.

The vertical pipe A is made in two parts, 0 and d, the former being secured rigidly to the car, and extending up Within the latter, which is secured to and turns with the body of the ventilator. These two pipes, fitted one within the other, allow the ventilator to turn freely, while at the same time they practically prevent the entrance of air from the outside.

When the device is in operation the air entering the mouth of the actuating-nozzle B escapes from the small inner end thereof in a strong jet or blast, which, passing back through the nozzle (J and the diverging pipe D, produces a partial vacuum in the chamber a, in consequence of which the air is drawn upward, through the pipe A, from the interior of the car, and carried out through the tube D.

The mixing-nozzle (J, placed in rear of the actuating-nozzle B, and decreasing in diameter toward the discharge-pipe D, aids materi ally in causing an exhaustion of the air from the car.

The flaring dischargepipe, having its large end toward the rear, is of great importance in assisting to create a vacuum in chamber a, and to cause a discharge of the air at the rear.

I am aware that ventilators in which a current of air enters a funnel and passes over the mouth of a ventilating-flue are old, and also that ventilators of various kinds have been mounted on pivots, and provided with a vane to keep them faced to the wind, and I lay no claim thereto, broadly. I am not aware, however, that the receiving-nozzle, the exhaustpipe, and the trumpet-shaped discharge-pipe have ever been combined with the mixingnozzle.

Having thus described my invention, what I claim is The car-ventilator consisting of the flaring mouth or nozzle B, the pipe A, the mixingnozzle (1, and the diverging tube D, constructed and combined substantially as shown.

ERNSTKORTING. Witnesses:

L. SGHIEBTE, J. W. Fnrcor. 

